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Photovoltaic inverter system of split type boosting and inverting circuit

A photovoltaic inverter, inverter circuit technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve the problems of increasing the cost of one-time installation, maintenance costs, and manpower, and save transportation costs and manual installation. cost, reduce usage requirements, and save operating costs

Inactive Publication Date: 2020-06-12
NINGBO GINLONG TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Due to the increasing power demand of current string inverters, their volume and weight have also increased. The weight of many string inverters has exceeded 75kg, and a large amount of manpower must be invested or large cranes must be used for installation. , which greatly increases the installation cost and subsequent maintenance cost, and cannot adapt to the application environment with complex terrain

Method used

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  • Photovoltaic inverter system of split type boosting and inverting circuit
  • Photovoltaic inverter system of split type boosting and inverting circuit

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Embodiment 1

[0019] See Figure 1-Figure 2 As shown, the present invention provides a split type boost and inverter circuit photovoltaic inverter system, including a boost device 1 and an inverter device 2, the boost device 1 includes a previous stage boost circuit 3 and The first DSP controller 4 and the inverter device 2 include a rear-stage inverter circuit 5 and a second DSP controller 6 connected to each other, and the front-stage booster circuit 3 is connected to the rear-stage inverter circuit 5 through a first cable 7. The first DSP controller 4 is connected to the second DSP controller 6 through a second cable 8. Among them, the inverter device 2 is also electrically connected to a load circuit 9 on the grid side.

[0020] Preferably, the first cable 7 is a power cable, and multiple power cables can be set according to actual needs. The second cable 8 is a communication cable, and multiple communication cables can be set according to actual needs.

[0021] The boost device and the i...

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Abstract

The invention discloses a photovoltaic inverter system of a split type boosting and inverting circuit. The system comprises a boosting device and an inversion device, wherein the boosting device comprises a front-stage boosting circuit and a first DSP controller which are connected with each other; the inversion device comprises a rear-stage inversion circuit and a second DSP controller which areconnected with each other; the front-stage boosting circuit is connected with the rear-stage inversion circuit through a first cable, and the first DSP controller is connected with the second DSP controller through a second cable. According to the split type photovoltaic inverter system, the boosting device and the inverter device in the photovoltaic inverter can be split into two split devices which are small in size and light in weight, and the two split devices are connected through the power cable and the communication cable, so the expandability of the photovoltaic inverter system is enhanced, and the split type photovoltaic inverter system can more flexibly adapt to various application environments with complex terrains.

Description

Technical field [0001] The invention relates to the technical field of photovoltaic power generation related equipment, in particular to a photovoltaic inverter system of a split type boost and inverter circuit. Background technique [0002] String photovoltaic inverters have the advantages of small size, light weight, and convenient installation and maintenance. Each string of photovoltaic cells (or several strings) has an independent booster circuit to achieve maximum power point tracking (MPPT), which avoids the large-scale impact caused by uneven lighting and shadow occlusion after the centralized inverter connects all the strings in parallel. Range power tracking is not accurate. [0003] Due to the increasing power demand of current string inverters, their size and weight have also increased. Many string inverters weigh more than 75kg and must be installed with a lot of manpower or large cranes. , Which greatly increases the cost of one-time installation and subsequent main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5387H02M3/155
CPCH02M3/155H02M7/5387Y02E10/56
Inventor 王一鸣许颇
Owner NINGBO GINLONG TECH
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